CONTENTS Title Page Copyright Page Preface 1 What Is the DECNIS? 1.1 DECNIS Functions 1.1.1 Licenses 1.2 Hardware Information 1.2.1 MPC-II Functions 1.2.2 Network Interface Cards 1.3 Useful Documentation 2 DECNIS Functions 2.1 Network Connections 2.1.1 LAN Network Connections 2.1.1.1 CSMA/CD Type 2.1.1.2 FDDI 2.1.2 Leased Line Network Connections 2.1.2.1 PPP 2.1.2.2 HDLC 2.1.2.3 DDCMP ~ 2.1.2.4 CHDLC 2.1.3 Public Network Connections 2.1.3.1 SMDS 2.1.3.2 Frame Relay 2.1.3.3 X.25 2.1.3.4 ATM 2.2 IP Routing 2.2.1 Definition of IP Routing 2.2.2 Example IP Network 2.2.3 Supported Circuits For IP Routing 2.2.4 Internet Protocols 2.2.5 IP Route Propagation and Filtering 2.2.6 IP Standby 2.2.7 IP Multicasting 2.2.8 IP Packet Filtering 2.3 Novell NetWare IPX 2.4 AppleTalk 2.5 OSI Routing 2.5.1 OSI Routing Definitions 2.5.2 Examples of OSI Routing Over LANs and WANs 2.6 Bridging 2.6.1 Bridge Filtering 2.6.2 Remote Bridging 2.7 X.25 Gateway and X.25 Relay 2.7.1 X.25 Gateway 2.7.2 X.25 Relay 2.7.3 CONS LAN/WAN Relay 2.8 Multiprotocol and Multivendor Environments 2.9 Backup Circuits 2.10 Packet Prioritization 2.10.1 Discarding Packets (Simple Packet Filtering) 2.10.2 Pattern Match Prioritization 2.11 Optimizing Routing Database Sizes 3 General Operation 3.1 Setting Up a DECNIS 3.1.1 Types of Load Host 3.1.2 BOOTP Load Hosts 3.1.3 MOP Load Hosts 3.1.4 Configuring a Load Host 3.1.5 Configuring the DECNIS Software 3.1.6 Downline Loading the DECNIS Software 3.1.6.1 Loading from the DECNIS Nonvolatile Memory (Flash) 3.1.6.2 Agent Loading and Dumping 3.2 Managing a DECNIS 3.2.1 Console Terminal 3.2.2 DECNIS Configurator 3.2.3 SNMP (Simple Network Management Protocol) 3.2.4 NCL 3.2.5 DECmcc ~ 3.2.6 Problem Solving Glossary ATM Adaptation Layer (AAL) . . . AFI (Authority and Format Identifier) Aging Process . . . ATM (Asynchronous Transfer Mode) Attribute . . . Border Gateway Protocol Bridge . . . Characteristics CHDLC . . . Common Carrier Common Management Information Protocol . . . Counter Rotating Ring Counters . . . DAS Database Sizing . . . Data Terminal Equipment DCE (Data Circuit-terminating Equipment) . . . DECnet/OSI Area DECnet/OSI End Node . . . DDCMP (Digital Data Communications Message Protocol) Digital Distributed Name Service . . . Downline Load Downstream . . . Dynamic Assignment (DA) EGP (Exterior Gateway Protocol) . . . Exterior Gateway Protocol FCS (Frame Checking Sequence) . . . FRMR Frame Relay . . . Header High-level Data Link Control . . . Integrated IS-IS Interior Gateway Protocol (IGP) . . . IP Packet Filtering IP Router . . . LCN Learning Process . . . Live Insertion LLC2 . . . Management Protocol Manual Routing . . . Multiprotocol Environment Name Binding Protocol (NBP) . . . Network Diameter Network Information Frame . . . NSP Open Shortest Path First . . . Packet Size Packet Switched Data Network . . . Physical Level PING . . . Proxy ARP PSDN (Packet Switched Data Network) . . . Routing Routing Information Protocol . . . Server Client Session Control . . . SMDSU SMT . . . SVC (Switched Virtual Circuit) Switched Multimegabit Data Service . . . TOS Values Trace . . . Upstream VCP (Vitalink Communications Protocol) . . . X25 Client X25 Client System . . . ZIP FIGURES 1-1 Network Connections on the DECNIS 2-1 ATM Functions of the DECNIS 600 2-2 Example IP Network 2-3 Routing over WANs 2-4 Routing over LANs 2-5 Local Bridging Between LANs 2-6 Remote Bridging Between LANs 2-7 DECNIS as an X.25 Gateway 2-8 DECNIS as an X.25 Relay 2-9 A CONS LAN/WAN Relay 2-10 A Multiprotocol Environment 2-11 A Multivendor Environment TABLES 1-1 DECNIS Software Documentation